Gas discharge plasma-disc



FIG. 1 is a top plan view of a gas discharge plasma-disc showing our newdesign, the bottom plan view being a mirror image;

FIG. 2 is a rear view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a front view thereof; and,

FIG. 6 is a perspective view thereof.

The broken lines shown in the figures represent environmental structureonly and form no part of the claimed design.

The ornamental design for a gas discharge plasma-disc, as shown anddescribed.